diff options
| author | Nicholas Piggin <npiggin@gmail.com> | 2020-07-03 11:19:57 +1000 |
|---|---|---|
| committer | Michael Ellerman <mpe@ellerman.id.au> | 2020-07-22 00:01:25 +1000 |
| commit | 5c9fa16e8abd342ce04dc830c1ebb2a03abf6c05 (patch) | |
| tree | ee54ef37787256227a5e2929a888951a8524f5ac /tools/testing/selftests/powerpc/mm/.gitignore | |
| parent | f4ac1774f2cba44994ce9ac0a65772e4656ac2df (diff) | |
powerpc/64s: Remove PROT_SAO support
ISA v3.1 does not support the SAO storage control attribute required to
implement PROT_SAO. PROT_SAO was used by specialised system software
(Lx86) that has been discontinued for about 7 years, and is not thought
to be used elsewhere, so removal should not cause problems.
We rather remove it than keep support for older processors, because
live migrating guest partitions to newer processors may not be possible
if SAO is in use (or worse allowed with silent races).
- PROT_SAO stays in the uapi header so code using it would still build.
- arch_validate_prot() is removed, the generic version rejects PROT_SAO
so applications would get a failure at mmap() time.
Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
[mpe: Drop KVM change for the time being]
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/20200703011958.1166620-3-npiggin@gmail.com
Diffstat (limited to 'tools/testing/selftests/powerpc/mm/.gitignore')
| -rw-r--r-- | tools/testing/selftests/powerpc/mm/.gitignore | 1 |
1 files changed, 0 insertions, 1 deletions
diff --git a/tools/testing/selftests/powerpc/mm/.gitignore b/tools/testing/selftests/powerpc/mm/.gitignore index 8f841f925baa..8d041f508a51 100644 --- a/tools/testing/selftests/powerpc/mm/.gitignore +++ b/tools/testing/selftests/powerpc/mm/.gitignore @@ -2,7 +2,6 @@ hugetlb_vs_thp_test subpage_prot tempfile -prot_sao segv_errors wild_bctr large_vm_fork_separation |